Data/hora: 10/06/2024 03:44:49

Provedor de dados: | Biological Research
País: | Chile
Título: | Asexual Recombination in a uvsH Mutant of Aspergillus nidulans
Autores: | SOUZA-JÚNIOR,S A; BECKER,T C A; CASTRO-PRADO,M A A.
Data: | 2007-01-01
Ano: | 2007
Palavras-chave: | Mitotic crossing-over; Parameiosis; Uvs mutation.
Resumo: | Mutations in the gene uvsH of Aspergillus nidulans result in increased spontaneous chromosome instability and increased intragenic and intergenic mitotic recombination in homozygous diploids. The aim of the present work was to obtain a uvs mutant of A. nidulans and to use it for the isolation of asexual recombinants (parameiotic segregants). The mutant uvsH, named B511, showed normal frequency of meiotic recombination in sexual crosses and high frequency of parameiotic segregants in the parasexual crossings with master strains (B511//A757 and B511//A288). Asexual haploid recombinants (parameiotic segregants), diploid and aneuploid segregants were recovered directly from the uvs//uvs+ heterokaryons (B511//A757 and B511// A288). Parameiotic segregants originated through mitotic crossing-over and independent assortment of chromosomes
Tipo: | Journal article
Idioma: | Inglês
Identificador: | http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602007000100007
Editor: | Sociedad de Biología de Chile
Formato: | text/html
Fonte: | Biological Research  v.40 n.1 2007